Joint stools were then created; on three legs Upborne they stoodthree legs upholding firm A massy slab, in fashion square or round. On such a stool immortal Alfred sat. Cowper.The Sofa, Book I. Line 19.
Doubt not her care should be To comb your noddle with a three-leggd stool, And paint your face, and use you like a fool. Shakespeare.Taming of the Shrew, Act I. Scene 1. (Katherine to Hortensio.)